Composition for coating metal being formed



I product.

Patented Apr. 15, 1941 .UNITED, STATES PATENT COMPOSITION FOR COATING METAL BEING FORMED Harold It. Hard, Independence, M0.

N Drawing.

Application July 24, 1939,

Serial No. 286,155

Claims.

This invention relates to a new composition of matter. for coating metals being formed and particularly to that type of apreparation which serves to facilitate rapid and accurate forming of the metals.

In the various methods of changing the forms of metal, such as wire drawing, stamping, die casting, etc., it has been the general practice to use some lubricant to lessen the friction between the metal :being formed and the tools or dies by which the forming is being accomplished. The most common lubricant now being used for the cold drawing of metals, consists of a composition of tallow and talc, while in the hot drawing, graphite is generally used.

I The present invention contemplates the production of a new preparation that will materiwire, the finished wire has a highly polished finish not obtainable when using the standard lubricants; furthermore, there is a durable coating formed on the wire which serves to prevent the oxidation of the steel.

.After many tests, it is very evident'that this composition so coats the wire being formed that ally lessen the power usually required to perform the metal forming operation; will permit of a material increase in production; and will cause the metal product to'have a much smoother finish than is obtainable by the use of the now known lubricants. I

The ingredients entering into this preparation include a vegetable soap. ferrous oxide and lime water.

The vegetable soap may includev soaps conhowever, the soap well suited for the present composition contains considerable cottonseed oil treated with any suitable caustic alkali. The ferrous oxide (FeO) is the standard commercial The lime water is asaturated solution of calcium hydroxide with water.

Various preparations for different uses may be had by intermixing the ingredients in the fol lowing proportions, by weight: 28 to 78 parts of a vegetable soap; 2 to 4 parts of ferrousoxide: and to 70 parts of lime water.-

For use in drawing the heavier steel wire, the

following proportions, by weight of the ingredients, has been found very satisfactory; 78. parts of vegetable soap; 2 parts of ferrous oxide; and 20 parts of lime' water.

A composition for drawing the finer steel wires, the following proportions of the ingredients has been used with very satisfactory results: 56 parts of vegetable soap; 4 parts of ferrous oxide; and 40 parts of lime Water.

For drilling and cutting operations in steel, the following composition has been found best suited: 28 parts of vegetable soap; 2 parts ferrous oxide; and '70 parts lime water.

Many other variations of the composition with range of proportions above recited, might be made to meet the various needs encountered in forming iron products by extruding die casting, die forming, or cutting.

the- ,die surfaces also receive a smooth coating, thus insuring the passing of the wire through the die with a lubricating coat therebetween,

.which' prevents to a large degree, the undesin able heating of the die and the wire.

It is apparent that by the use of this new composition of matter, the operation necessary in forming iron products may be facilitated and the product will be materially improved.

Having thus describedthe invention, what is claimed as new and desired to be secured by Letters Patent is:

1. A composition of matter for coating metals being formed, resulting from intermixing the following ingredients in the following proportions, by weight, namely: 28 to '78 parts of a vegetable soap; .2 to 4 parts of ferrous oxide; and 20 to 70 parts of lime water.

2. A composition of matter for coating metals being formed, resulting from intermixing .the following ingredients in the following proportions, by weight, namelyz, table soap; 2 parts of ferrous oxide; and 20 parts of lime water.

3. A composition of matter for coating metals being formed, resulting from intermixing the following ingredients in the following proportions, by weight, namely: 56 parts of. a vege- -table soap; 4 parts of ferrous oxide; and 40' following ingredients in the following proportions, by weight, namely: 28 parts of a vegetable soap; 2 parts of ferrous oxide; and 70 parts of lime water.

5. Acomposition for coating material which is to :be submitted to a drawing'operation in the manufacture of wire, comprising a dispersion of lime and ferrous oxide in water stabilized by means of a vegetable oil soap.

HAROLD R. HURD.

78 parts of a vege-. 

